001    /**
002     * Copyright (c) 2000-2012 Liferay, Inc. All rights reserved.
003     *
004     * This library is free software; you can redistribute it and/or modify it under
005     * the terms of the GNU Lesser General Public License as published by the Free
006     * Software Foundation; either version 2.1 of the License, or (at your option)
007     * any later version.
008     *
009     * This library is distributed in the hope that it will be useful, but WITHOUT
010     * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
011     * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
012     * details.
013     */
014    
015    package com.liferay.portal.security.auth;
016    
017    import com.liferay.portal.kernel.log.Log;
018    import com.liferay.portal.kernel.log.LogFactoryUtil;
019    import com.liferay.portal.security.pacl.PACLClassLoaderUtil;
020    import com.liferay.portal.util.PropsValues;
021    
022    /**
023     * @author Brian Wing Shun Chan
024     */
025    public class ScreenNameGeneratorFactory {
026    
027            public static ScreenNameGenerator getInstance() {
028                    if (_screenNameGenerator == null) {
029                            if (_log.isDebugEnabled()) {
030                                    _log.debug(
031                                            "Instantiate " + PropsValues.USERS_SCREEN_NAME_GENERATOR);
032                            }
033    
034                            ClassLoader classLoader =
035                                    PACLClassLoaderUtil.getPortalClassLoader();
036    
037                            try {
038                                    _screenNameGenerator =
039                                            (ScreenNameGenerator)classLoader.loadClass(
040                                                    PropsValues.USERS_SCREEN_NAME_GENERATOR).newInstance();
041                            }
042                            catch (Exception e) {
043                                    _log.error(e, e);
044                            }
045                    }
046    
047                    if (_log.isDebugEnabled()) {
048                            _log.debug("Return " + _screenNameGenerator.getClass().getName());
049                    }
050    
051                    return _screenNameGenerator;
052            }
053    
054            public static void setInstance(ScreenNameGenerator screenNameGenerator) {
055                    if (_log.isDebugEnabled()) {
056                            _log.debug("Set " + screenNameGenerator.getClass().getName());
057                    }
058    
059                    _screenNameGenerator = screenNameGenerator;
060            }
061    
062            private static Log _log = LogFactoryUtil.getLog(
063                    ScreenNameGeneratorFactory.class);
064    
065            private static ScreenNameGenerator _screenNameGenerator;
066    
067    }